Update build.gradle.kts (#5087)

V2rayNG/app/build.gradle.kts

@@ -67,14 +67,16 @@ android {
         }
     }
 
-
     compileOptions {
         isCoreLibraryDesugaringEnabled = true
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_17.toString()
+
+    kotlin {
+        compilerOptions {
+            jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
+        }
     }
 
     applicationVariants.all {